The residual mountains of the Baekdudaegan Mountain Range form ten tall peaks in the Yeongnam region. Dubbed the "Yeongnam Alps," these peaks include Chwiseosan (1,092 meters, also called Yeongchwisan), Sinbulsan (1,209 meters), Cheonhwangsan (1,189 meters), Unmunsan (1,188 meters), Goheonsan (1,033 meters), Munboksan (1,013 meters), and Gajisan mountains. This group of mountains is uniquely covered with reeds. Gajisan Mountain is the tallest of this group, rising above mountains almost 1,000 meters high.

An attraction of hiking in Gajisan Mountain is that various large, oddly shaped rock peaks can be seen from the mountain trail. To the east of the mountain is Seongnamsa Temple built during the Silla Kingdom. Today, only Buddhist nuns remain, but there are relics like the stupa of Seongnamsa Temple (Treasure) and a three-story stone pagoda.